Convert data storage units — bytes, KB, MB, GB, TB, PB.
| Unit | Name | Value |
|---|---|---|
| bit | Bit | 8388608 |
| B | Byte | 1048576 |
| KB | Kilobyte | 1024 |
| GB | Gigabyte | 0.0009765625 |
| TB | Terabyte | 9.536844e-7 |
| PB | Petabyte | 9.313432e-10 |
Formula: Kilobyte = Megabyte × 1000
Multiply any megabyte value by 1000 to get kilobyte. One megabyte equals 1000 KB.
Reverse: Megabyte = Kilobyte × 0.001
Common megabyte values with real-world context — factor: 1 MB = 1000 KB
| Megabyte (MB) | Kilobyte (KB) | Context |
|---|---|---|
| 0.001 MB | 1 KB | 1 KB text |
| 0.1 MB | 100 KB | Small webpage |
| 1 MB | 1,000 KB | Small photo |
| 5 MB | 5,000 KB | MP3 song |
| 10 MB | 1e+04 KB | MP3 song |
| 50 MB | 5e+04 KB | Short video |
| 100 MB | 1e+05 KB | Long video clip |
| 650 MB | 6.5e+05 KB | CD-ROM |
| 1,000 MB | 1e+06 KB | 1 GB file |
| 4,700 MB | 4.7e+06 KB | DVD disc |
| 1e+04 MB | 1e+07 KB | Blu-ray disc |
| 5e+04 MB | 5e+07 KB | 50 GB game |
| 1e+05 MB | 1e+08 KB | 100 GB drive |
| 5e+05 MB | 5e+08 KB | 500 GB SSD |
| 1e+06 MB | 1e+09 KB | 1 TB drive |
MB × 1,000 = KB (decimal). 5 MB = 5,000 KB.
1 MB = 1,000 KB, 650 MB (CD) = 650,000 KB.
KB ÷ 1,000 = MB.
Optimizes image, video, and asset sizes in MB for page load performance.
Enforces attachment size limits (typically 10-25 MB) on mail servers.
Manages APK/IPA sizes in MB — App Store recommends under 200 MB for cellular download.
Checks RAW image file sizes (typically 20-50 MB) on camera cards.
Monitors packet capture file sizes and network log sizes in MB.
Tracks patch download sizes in MB to estimate download time on their connection.
The megabyte (MB) equals 1,000,000 bytes (decimal) or 1,048,576 bytes (binary). It became the dominant unit for file sizes and storage in the 1990s with the rise of personal computing and the internet.
Megabytes define everyday digital content: a 3-minute MP3 song is about 3-5 MB; a high-resolution JPEG photo is 2-6 MB; a standard web page averages around 2 MB including images.
Interesting fact: The entire text of the King James Bible is about 4.3 MB. The first consumer CD-ROMs (1985) held 650 MB, which seemed enormous at the time.
The kilobyte (KB) equals 1,000 bytes in decimal (SI) notation, or 1,024 bytes in binary usage — a distinction that has caused decades of confusion. The SI standard (IEC 80000-13, 1998) formally defined KB as 1,000 bytes, reserving KiB for 1,024 bytes.
Kilobytes were the standard measure for file sizes in the early PC era (1980s). A floppy disk held 360 KB or 1.44 MB; early email attachments were measured in kilobytes.
Interesting fact: A plain text page of 500 words is about 2-3 KB. The first commercially available hard drive (IBM 350, 1956) stored just 3.75 MB — or about 3,750 KB.
Converting megabyte to kilobyte is a common task in computing, networking, and data management. Storage manufacturers, operating systems, and network equipment often express data sizes in different units — understanding the conversion is essential for comparing specifications, planning storage capacity, and interpreting network speed versus file size relationships.
As a practical reference: 5 MB = 5000 KB and 10 MB = 10,000 KB. For larger quantities, 100 MB = 100,000 KB. The reverse conversion uses the factor 0.001, so 1 KB = 0.001 MB. Note that decimal prefixes (KB=1,000, MB=1,000,000) differ from binary prefixes (KiB=1,024, MiB=1,048,576) — always check which standard your software or hardware uses.
All conversions use the internationally recognized factor of exactly 1 MB = 1000 KB, calculated with IEEE 754 double-precision arithmetic accurate to at least 8 significant figures.